pH Value, Buffer Content and the Content of Chemical Components between Heartwood and Sapwood in Poplar 72 and Poplar 69

72和69杨心边材pH值、缓冲容量及化学成分含量的研究

Sapwood contains xylem vessels, but not as strong as heartwood

边材含有木质导管,但不如中心木质那样坚硬。

Light-induced Color Variations of Japanese Cedar (Cryptomeria japonica)Heartwood Extracted with Various Solvents

不同溶剂萃取之柳杉心材受光影响的颜色变化

The purplish-red dye obtained from the heartwood of this tree.

从这种树的芯材里提取的一种紫红色的染料

A raw material obtained from the heartwood of this plant,used in the preparation of tannins and brown dyes.

儿茶从这种植物的心材中提取的原料,用于生产单宁酸和棕色染料

A spiny Asian tree(Acacia catechu)having bipinnately compound leaves,spikes of yellow flowers,and dark heartwood .

儿茶树一种亚洲生多刺木(儿茶金合欢属),有两羽状复叶、穗状黄花和深色心材

Antifungal Activity of Essential Oils and Their Constituents from Black Heartwood -Type Cryptomeria Japonica

黑心柳杉造林木精油及其成分之抗真菌活性

Experimental Study on Preservation Performance and Acute Toxicity of Maackia amurensis Rupr. et. Maxim. Heartwood Extracts

怀槐心材提取物的防腐性能及其急性毒性试验研究

Repellency and Killing Activities of Essential Oil from Cryptomeria Japonica Heartwood against Silver Fish (Lepisma Saccharina)

柳杉心材精油对衣鱼之忌避与致死活性之研究

One or more layers of living and functional sapwood cells are periodically converted to heartwood .

每个生长周期都有一或多层活的边材细胞转变成心材。

Analysis of Compounds in Dichloromethane Extractives for Sawara Falsecypress (Chamaecyparis pisifera)Outer Heartwood

日本花柏心材外缘二氯甲烷提取物组分分析

Chemical Components of Essential Oil in the Heartwood of Cunninghamia lanceolata (Lamb.)Hook.

杉木心材精油化学成分研究

A tropical tree(Diospyros ebenum)of southern Asia,having hard,dark-colored heartwood .

乌木树一种生长于南亚的热带树木(乌木柿树属),木质坚硬,呈深黑色

A spiny tropical American tree(Haematoxylon campechianum)in the pea family,having dark heartwood from which a dyestuff is obtained.

洋苏木一种美洲热带产豆科多刺乔木(墨水树),芯材为黑色,可用于制备染料

The heartwood of this tree.

这种树的芯材

Heartwood is mechanically strong, resistant to decay, and less easily penetrated by wood-preservative chemicals than other types of wood.

质地坚硬,能抗腐蚀,比起其它的木材型式而言,木材防腐剂亦难渗透。

The purplish heartwood of this tree,used in furniture and turnery.

紫心木这种树木的紫色木材,用于制造家具和细木加工

Six years ago I founded KIPP Heartwood Academy , a public charter school in San Jose, part of a network of 99 KIPP schools nationwide.

六年前我在圣何塞建立了一所公立特许学校——KIPP心材学院，这是全国99所KIPP学校中的一所。

The small permeability in heartwood mainly was due to there were large tylosis in the vessels and vestured pit between the vessels.

心材部位渗透性差的主要原因是由于管孔内含有大量侵填体及导管间纹孔呈附物型的缘故。

heartwood rot

木心腐朽

heartwood rot

心材腐朽

heartwood tree

心材树

wound heartwood

伪心材

false heartwood

假心材

traumatic heartwood

创伤心材

imperfect heartwood tree

熟材树

tree with colored heartwood

心材树种

tree with imperfect heartwood

熟材树种

ripe wood;imperfect heartwood

熟材

change from sapwood to heartwood

心材化